Regulating-valve.



No. 853,504. PATBNTED MAY '14, 1907. A. H. EDDY.. REGULATING VALVE.

APPLICATION FILED JAN. 6, 1908.

v I, %-J F Ii j UNITED STATES PATENT OFFICE.

ARTHUR H. EDDY, OF WINDSOR, CONNECTICUT, ASSIGNOR OF ON E-HALF TO CHARLES E. SHEPARD, OF HARTFORD, CONNECTICUT.

REGULATlNG-VALVE.

Specification of Letters Patent.

Patented May 14, 1907.

To allwhom it may concern.-

Be it known that I, ARTHUR H. EDDY, a citizen of the United States, residing at Windsor, in the county of Hartford and State of Connecticut, have invented a new and useful Regulating-Valve, of which the following is a specification.

This invention relates to a valve which is designed to regulate the flow of water or other fluid which is used for absorbing heat from other liquids or: gases or apparatus which it is necessary or desirable to keep cool, by the temperature of the cooling fluid in order to eiiect an economy in the use of the I5 cooling fluid, and it is particularly, adapted for controlling by its own temperature the flow of Water which is employed to cool the condenser of a refrigerating plant, a large item of expense in the operation of which is for the condensing water which is necessarily used.

The object of the invention is to construct a simple, eflicient, and sure valve which Will automatically regulate the flow of water, or'

other cooling fluid, according to its own temperature, that is, increase the flow if not enough cooling water or other fluid is being used and it heats above normal, and reduce the flow if the temperature drops below normal as a result of the use of too much water 3 or other cooling fluid, and to effect the stopping of-the motor which is used to o crate the systemin which the valve is place if the tem erature of the cooli water orother flui rises too high or if tie flow of Water ceases, and to eflect a starting up of the motor when the temperature of the cooling water or other fluid drops to normal or if the flow havin been stopped again starts.

The em odiinent of this invention has a 4 'valve with ports the area of which depends upon the density of a confined fluid which is subjected to the flow of water or other cooling fluid, and has electical contacts adapted to be connected with suitable motor controlling apparatus, that areengaged'when the predetermined extremes of expansibility of 'fihibflnfined fluid .are reached.

-Thefigure-of the drawing shows a central vertical "section ofvone form of valve which bodiesthje' invention. .7

.. n the water's-way in'the body]; ofthe form *cfpval ve' illustrated, which may be cast to shepeHof-jiron, ;brass,fbronze, or any other suitable metal, is a drumwhich is preferably the top of the diaphragm chamber.

formed of an inner tube 2 and an outer tube 3. The outer tube is a little less in diameter than the interior of the body and the inner tube is open at the top and bottom, in order that the water or other cooling fluid which flows through the body may pass around the outside of and through the interior of the drum. The space between these tubes is closed at the bottom by a rin 51 and at the top by a ring 5. Spanning t 1e ring at the to of the drum is a bridge 6 with a passage 7. n a chamber above the body is an expan sion diaphragmS. This diaphragm is connected with the bridge across the ring at the top of the drum by a tube 9 in such manner that the passage in the bridge communicates through the tube with the interior of the dia hragm.

n the lower part of the body is a cylinder 10 containing a-freely movable piston valve 11. Around the cylinder is a port opening 12 and through the walls of the piston and co-operating with the ort opening in the cylinder are ports 13. a rod 14 connected with a s ider 15 that is attached to the ring at the ottom of the drum. The joint between the piston rod and piston valve is desirably made somewhat loose in order that there may be no binding of the parts.

A plug 16 which can be easily removed to permit freeaccess to the valve cylinder is screwed into the opening at the bottom of the body. This plug is threaded so that the valve may be readily attached to the pipe from the system containing the water or other fluid which is used for cooling purposes and the flow of which is to be regulated by its own temperature; The lower part of the outlet 17 is threaded for'the attachment of a pipe which is used for conductin the water or other cooling fluid to any referablyopen in order to allowthe cooling uid to overflow rather than flood the diareason, become closed or choked;

The top of the diaphragm is looselyv connected with-an adi'lusting screw 18 which extends through t e cap 19 which forms y he piston valve is by I desire locality. The top of this outlet is taming this screw the location of the diaphragm and the normal relation of the ports in the piston valve and the port opening in the valve cylinder are adjusted. When adjusted the nut is set 'up to clamp the screw against further movement.

Pivotally supported b the base 21 of the diaphragm chamber is a ever 22. The inner end of this lever extends beneath a hub 23 that is attached to the bottom of the diaphragm and the outer end of this lever bears an insulated electrical contact 24. Extending outwardly from the base is an arm 25 bearing an insulated electrical contact 26, the position of which is adjusted by the screw 27. Extending outwardly from the cap is an arm 28 bearing an insulated electrical contact 29, the position of which is adjusted by the screw 30. These electrical contacts may be connected with circuit wires leading to any common form of electrical apparatus for controlling the operation of a motor used in the system. It is desirable to connect a tension spring 31 which may be adjusted by turning the screw 32 with the lever for the 1113036 of counterbalancing the weight of t e The space between the tubes which forms the drum in. the waterway in the body of thevalve'isfilled some'fiuid which has a low boiling pointQ-This'fliiid may besulfuric ether underabout five pounds absolute pressure, whiehsubstance under this pressure boils at a 'roximately fifty degrees and has considerahg'expansive power. If this valve is tobe used in a refrigerating'system which actuatesthefpump thatcirculates the i i .1 interior of the diaphragm With the interior the inlet is connected witha pipe that leads. from the condenser and, the outlet is connected-with apipe'that leads-to the receptacle gfor the-cooling: .waterd .The. circuit from the electrical contacts Ina be.

connected withiancontrollerof common orm which controlsthe operationgof yihea motor refrigerating fluidt Thelwater-fr' m;

in .,in-the;. cylinderfand ports in the piston v, veand;up..-around theoutsideand through the interior-of-the. drum containin the-er ipansible' fluidand through the but et to' zthe ton valvewillremain'with its-ports 0 onto the predeterminedno'rmaldegree. there is not sufficient water flowing to. properly re .waste throng the condenser "to keep-the tempera: .tureproperl I reduced the tem' 'erat'ure of the water will" ave-no abnorma efl'ect onthe fluid jin: the drum andconsequently theipisduce. the temperature of the ,condenserthis waterwill become warmed and its heat will cause the fluid in- 'the drumgto-expand and V the expansion diaphragmflt o' epenand force the'piston downwardly into-the cylinder-so as to-enlarge the-g areaof the-ports and allow more" water to flow-'thro consequently the water to ow taster through 6 Y the condenser. If too much water is flowing-1..

um and connected parts.

r the'condenserpasses wardlyiuto. the" body throughthe port open-f h thevalve and 7 its temperature willbe below normal and this low temperature will cause a contraction of the fluid in thejdrum and a consequentclosing of the diaphragm which-will lift the piston valve and reduce the area of the ports so that less water ean flow through the valve and consequently through the condenser.

If the condenser water should become abnormally hot as a result'of requiring it to do too much work or the cessation of flow of water from the source of Sn p'ly to the condenser, the heat will expan the diaphragm to such an extent that the circuits to the controller which will cause the motor which operates the system to step will be closed. After the motor has oeen stop ed when the temperature again falls to the ow point the circuit to the controller which will start, up the motor will be closed.

The invention claimed is r l. A. thermostatiefluid regulator having a pension fluid located in said fluid-way and:

exposed to the fluid immediately it passes the-valve, a stem connectinglthe drum and valve, and a hollow diaphragm located above and out of the fluid way attached to.and having its interior communicatingwi'th the drum, substantially as specified."

2.. thermostatic fluid regulator having a body-jwith a fluid way through. the body; a valve for regulating the area'o the opening to the fluid way, a drum containing an expansionlfluid located in said fluid way and exposed to the. fluid immediately it passes .the valve, a stem connecting the drum andvalve, a -hollow diaphragm; adjustable means fsuppor'tingsaid diaphragm above-and out of. means connecting the the; fluid-way-,: an

of the; drum, substantially as specified;

. 3.. Athermostatic fluid-regulator havinga 'body with .a fluid-way through the.body, a

cylindrical valve casing ports at the lower-fend of..the body, a piston valve. in the valve-casing and having ports farranged'to coact with the ports through the casing, a

drum containing an expansion fluid. located .in.'.saidfiuid wayandexposed to the fluidimmediately it passes the -valve,- a stem connecting' the drum and piston valve, and a 'hollowdiaphragm located above and out of the fluid-way attached to and having its .interior communicating with the drum, substantiallyl as'specified. p,

4. A t ermostatic fluid regulator having a body with a fluid-way). through the body, a valve'for regulating t to the fluid-way, a drum containing an exp'ansi'on, fluid located in said fluid-way and "exposedto the fluidimmediately it passes the ve, Ta;- stem connecting the drum and valve,

g igg hollowdiaphragm located above and out of e area of the. opening" the fluid-way attached to and having its 1 and out of the fluid-way attached to and 1 interior communicating with the interior of having its interior communicating with the the drum, electrical contacts and means adaptedto engage the contacts at a predetermined degree of expansion of the diaphragm, substantially as specified.

5. A thermostatic fluid regulator having a body with a fluid-way through thr. body, a valve for regulating the area of the opening to the fluid-Way, a drum containing an expansion fluid located in said fluid-way and exposed to the fluid immediately it passes the valve, a stem connecting the drum and valve,-a hollow diaphragm located above interior of the drum, a lever adapted to be moved by the expansion of the diaphragm, an electrical contact carried by the lever, and electrical contacts adapted to be engaged by the lever contact at predetermined degrees of expansion of the diaphragm, substantially as specified.

ARTHUR H. EDDY.

Witnesses:

HA RY R. WILLIAMS, ETHEL M. LOWE. 

